Introduction: Laser Trip Wire With Breadboard Battery and Laser Supplies

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Laser trip wire made with breadboard and laser.

On your door when someone walks in so they get scared. For robbers and criminals. My door doesn't have a lock so an alarm would be great for my door. After trying this with arduino the code was messed up so i found out a different way. this way was much simpler and actually worked. Some problems I had was the alarm and light would go on no matter what and the code for my origanal trip wire didn't work

Step 1:

Connect all the wires to the breadboard and the battery.

Step 2:

Aim the laser at the sensor and when you interfere with the laser the alarm will go off.